Tuesday, February 9, 2010

284

284 = 22 x 71.

284 is a number that cannot be written as a sum of three squares.

284 = 28 + 28.

284 and 220 form a pair of amicable numbers, the smallest amicable pair. Two numbers n and m are called an amicable pair if the sum of all positive divisors of n is equal to the sum of all positive divisors of m and both are equal to n + m.


The Greek mathematician Diophantus died in the year 284.

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